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    Hell's Half Acre

    Shield volcano · 1,632 m · United States of America

    Hell's Half Acre
    Photo: Bureau of Land Management, U.S. Department of the Interior · Public domain · Wikimedia Commons

    Hell's Half Acre sits on the North American Plate, in a rift zone. 1 eruption is known since the end of the last ice age, the most recent in 3,250 BCE.

    Elevation
    1,632 m
    Type
    Shield volcano
    Tectonic Setting
    Rift zone, continental crust
    Dominant Rock
    Basalt / Picro-Basalt
    Plate
    North American Plate
    Country
    United States of America
    Last Eruption
    3,250 BCE
    Known Eruptions (Holocene)
    1
    Max. Explosivity (VEI)
    0

    Eruption Timeline

    Each bar is an eruption; its height shows its explosivity (VEI 0 to 8).

    3,250 BCE · VEI 0 VEI 2VEI 4VEI 6 3,250 BCE1500180019002000

    Eruption Uncertain Date

    Sources : Global Volcanism Program, 2026. Volcanoes of the World (v. 5.4.0; 7 Aug 2026), Smithsonian Institution, doi:10.5479/si.GVP.VOTW5-2026.5.4 (volcano.si.edu) · NOAA NCEI · USGS · Wikidata